core

package
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 Go to latest Published: Jul 13, 2019 License: LGPL-3.0 Imports: 38 Imported by: 0

Documentation

Overview

Modified from go-ethereum under GNU Lesser General Public License

Package core implements the Ethereum consensus protocol.

Index

Examples

Constants

This section is empty.

Variables

View Source 
var (
	// ErrKnownBlock is returned when a block to import is already known locally.
	ErrKnownBlock = errors.New("block already known")

	// ErrGasLimitReached is returned by the gas pool if the amount of gas required
	// by a transaction is higher than what's left in the block.
	ErrGasLimitReached = errors.New("gas limit reached")

	// ErrBlacklistedHash is returned if a block to import is on the blacklist.
	ErrBlacklistedHash = errors.New("blacklisted hash")

	// ErrNonceTooHigh is returned if the nonce of a transaction is higher than the
	// next one expected based on the local chain.
	ErrNonceTooHigh = errors.New("nonce too high")

	//ErrPrevBlockMissing is returned if a block's previous block is not exist in DB
	ErrPrevBlockMissing = errors.New("previous hash block mismatch")

	// ErrUnknownAncestor is returned when validating a block requires an ancestor
	// that is unknown.
	ErrUnknownAncestor = errors.New("unknown ancestor")

	// ErrPrunedAncestor is returned when validating a block requires an ancestor
	// that is known, but the state of which is not available.
	ErrPrunedAncestor = errors.New("pruned ancestor")

	// ErrFutureBlock is returned when a block's timestamp is in the future according
	// to the current node.
	ErrFutureBlock = errors.New("block in the future")

	// ErrInvalidNumber is returned if a block's number doesn't equal it's parent's
	// plus one.
	ErrInvalidNumber = errors.New("invalid block number")

	ErrMinorBlockIsNil   = errors.New("minor block is nil")
	ErrRootBlockIsNil    = errors.New("root block is nil")
	ErrInvalidMinorBlock = errors.New("minor block is invalid")
	ErrHeightMismatch    = errors.New("block height not match")
	ErrPreBlockNotFound  = errors.New("parent block not found")
	ErrBranch            = errors.New("branch not match")
	ErrTime              = errors.New("time not match")
	ErrMetaHash          = errors.New("meta hash not match")
	ErrExtraLimit        = errors.New("extra data exceeds limit")
	ErrTrackLimit        = errors.New("track data exceeds limit")
	ErrTxHash            = errors.New("tx hash not match")
	ErrMinerFullShardKey = errors.New("coinbase full shard key not match")
	ErrDifficulty        = errors.New("diff not match")
	ErrGasUsed           = errors.New("gas used not match")
	ErrCoinbaseAmount    = errors.New("wrong coinbase amount")
	ErrXShardList        = errors.New("xShardReceivedGasUsed not match")
	ErrNetWorkID         = errors.New("network id not match")
	ErrNotNeighbor       = errors.New("is not a neighbor")
	ErrNotSameRootChain  = errors.New("is not same root chain")
)
View Source 
var (
	ErrorTxContinue = errors.New("apply tx continue")
	ErrorTxBreak    = errors.New("apply tx break")
)
View Source 
var (
	// ErrInvalidSender is returned if the transaction contains an invalid signature.
	ErrInvalidSender = errors.New("invalid sender")

	// ErrNonceTooLow is returned if the nonce of a transaction is lower than the
	// one present in the local chain.
	ErrNonceTooLow = errors.New("nonce too low")

	// ErrUnderpriced is returned if a transaction's gas price is below the minimum
	// configured for the transaction pool.
	ErrUnderpriced = errors.New("transaction underpriced")

	// ErrReplaceUnderpriced is returned if a transaction is attempted to be replaced
	// with a different one without the required price bump.
	ErrReplaceUnderpriced = errors.New("replacement transaction underpriced")

	// ErrInsufficientFunds is returned if the total cost of executing a transaction
	// is higher than the balance of the user's account.
	ErrInsufficientFunds = errors.New("insufficient funds for gas * price + value")

	// ErrIntrinsicGas is returned if the transaction is specified to use less gas
	// than required to start the invocation.
	ErrIntrinsicGas = errors.New("intrinsic gas too low")

	// ErrGasLimit is returned if a transaction's requested gas limit exceeds the
	// maximum allowance of the current block.
	ErrGasLimit = errors.New("exceeds block gas limit")

	// ErrNegativeValue is a sanity error to ensure noone is able to specify a
	// transaction with a negative value.
	ErrNegativeValue = errors.New("negative value")

	// ErrOversizedData is returned if the input data of a transaction is greater
	// than some meaningful limit a user might use. This is not a consensus error
	// making the transaction invalid, rather a DOS protection.
	ErrOversizedData = errors.New("oversized data")
)
View Source 
var DefaultTxPoolConfig = TxPoolConfig{
	PriceLimit: 1,
	PriceBump:  10,

	AccountSlots: 16,
	GlobalSlots:  8092,
	AccountQueue: 64,
	GlobalQueue:  1024,

	Lifetime: 3 * time.Hour,

	NetWorkID: 3,
}

DefaultTxPoolConfig contains the default configurations for the transaction pool.

View Source 
var (
	ErrNoGenesis = errors.New("Genesis not found in chain")
)

Functions

func ApplyMessage 

func ApplyMessage(evm *vm.EVM, msg Message, gp *GasPool, feeRate *big.Rat) ([]byte, uint64, bool, error)

ApplyMessage computes the new state by applying the given message against the old state within the environment.

ApplyMessage returns the bytes returned by any EVM execution (if it took place), the gas used (which includes gas refunds) and an error if it failed. An error always indicates a core error meaning that the message would always fail for that particular state and would never be accepted within a block.

func ApplyTransaction 

func ApplyTransaction(config *params.ChainConfig, bc ChainContext, gp *GasPool, statedb *state.StateDB, header types.IHeader, tx *types.Transaction, usedGas *uint64, cfg vm.Config) ([]byte, *types.Receipt, uint64, error)

ApplyTransaction apply tx

func CalculateRootBlockCoinbase 

func CalculateRootBlockCoinbase(config *config.QuarkChainConfig, block *types.RootBlock) *big.Int

func CanTransfer 

func CanTransfer(db vm.StateDB, addr common.Address, amount *big.Int) bool

CanTransfer checks whether there are enough funds in the address' account to make a transfer. This does not take the necessary gas in to account to make the transfer valid.

func GenerateMinorBlockChain 

func GenerateMinorBlockChain(config *params.ChainConfig, quarkChainConfig *config.QuarkChainConfig, parent *types.MinorBlock, engine consensus.Engine, db ethdb.Database, n int, gen func(*config.QuarkChainConfig, int, *MinorBlockGen)) ([]*types.MinorBlock, []types.Receipts)

GenerateMinorChain creates a chain of n blocks. The first block's parent will be the provided parent. db is used to store intermediate states and should contain the parent's state trie.

The generator function is called with a new block generator for every block. Any transactions and uncles added to the generator become part of the block. If gen is nil, the blocks will be empty and their coinbase will be the zero address.

Blocks created by GenerateChain do not contain valid proof of work values. Inserting them into MinorBlockChain requires use of FakePow or a similar non-validating proof of work implementation.

Example 
var (
	id1, _ = account.CreatRandomIdentity()
	id2, _ = account.CreatRandomIdentity()
	id3, _ = account.CreatRandomIdentity()
	addr1  = account.CreatAddressFromIdentity(id1, 0)
	addr2  = account.CreatAddressFromIdentity(id2, 0)
	addr3  = account.CreatAddressFromIdentity(id3, 0)

	db                = ethdb.NewMemDatabase()
	fakeClusterConfig = config.NewClusterConfig()
)
prvKey1, err := crypto.HexToECDSA(hex.EncodeToString(id1.GetKey().Bytes()))
if err != nil {
	panic(err)
}
prvKey2, err := crypto.HexToECDSA(hex.EncodeToString(id2.GetKey().Bytes()))
if err != nil {
	panic(err)
}

ids := fakeClusterConfig.Quarkchain.GetGenesisShardIds()
for _, v := range ids {
	addr := addr1.AddressInShard(v)
	shardConfig := fakeClusterConfig.Quarkchain.GetShardConfigByFullShardID(v)
	shardConfig.Genesis.Alloc[addr] = big.NewInt(1000000)
}
fakeClusterConfig.Quarkchain.SkipMinorDifficultyCheck = true
// Ensure that key1 has some funds in the genesis block.
gspec := &Genesis{
	qkcConfig: fakeClusterConfig.Quarkchain,
}

rootBlock := gspec.CreateRootBlock()
genesis := gspec.MustCommitMinorBlock(db, rootBlock, gspec.qkcConfig.Chains[0].ShardSize|0)

chain, _ := GenerateMinorBlockChain(params.TestChainConfig, fakeClusterConfig.Quarkchain, genesis, new(consensus.FakeEngine), db, 5, func(config *config.QuarkChainConfig, i int, gen *MinorBlockGen) {
	switch i {
	case 0:
		// In block 1, addr1 sends addr2 some ether.
		tx, _ := types.SignTx(types.NewEvmTransaction(gen.TxNonce(addr1.Recipient), account.BytesToIdentityRecipient(addr2.Recipient.Bytes()), big.NewInt(100000), params.TxGas, nil, 0, 0, 3, 0, nil), types.MakeSigner(0), prvKey1)
		gen.AddTx(config, transEvmTxToTx(tx))
	case 1:
		// In block 2, addr1 sends some more ether to addr2.
		// addr2 passes it on to addr3.
		tx1, _ := types.SignTx(types.NewEvmTransaction(gen.TxNonce(addr1.Recipient), account.BytesToIdentityRecipient(addr2.Recipient.Bytes()), big.NewInt(1000), params.TxGas, nil, 0, 0, 3, 0, nil), types.MakeSigner(0), prvKey1)
		tx2, _ := types.SignTx(types.NewEvmTransaction(gen.TxNonce(addr2.Recipient), account.BytesToIdentityRecipient(addr3.Recipient.Bytes()), big.NewInt(1000), params.TxGas, nil, 0, 0, 3, 0, nil), types.MakeSigner(0), prvKey2)
		gen.AddTx(config, transEvmTxToTx(tx1))
		gen.AddTx(config, transEvmTxToTx(tx2))
	case 2:
		// Block 3 is empty but was mined by addr3.
		gen.SetCoinbase(account.NewAddress(account.BytesToIdentityRecipient(addr3.Recipient.Bytes()), 0))
		gen.SetExtra([]byte("yeehaw"))
	}
})

fakeFullShardID := fakeClusterConfig.Quarkchain.Chains[0].ShardSize | 0
// Import the chain. This runs all block validation rules.
chainConfig := params.TestChainConfig
blockchain, _ := NewMinorBlockChain(db, nil, chainConfig, fakeClusterConfig, new(consensus.FakeEngine), vm.Config{}, nil, fakeFullShardID)
genesis, err = blockchain.InitGenesisState(rootBlock)
if err != nil {
	panic(err)
}
defer blockchain.Stop()

if i, err := blockchain.InsertChain(toMinorBlocks(chain)); err != nil {
	fmt.Printf("insert error (block %d): %v\n", chain[i].NumberU64(), err)
	return
}

state, _ := blockchain.State()
fmt.Printf("last block: #%d\n", blockchain.CurrentBlock().Number())
fmt.Println("balance of addr1:", state.GetBalance(addr1.Recipient))
fmt.Println("balance of addr2:", state.GetBalance(addr2.Recipient))
fmt.Println("balance of addr3:", state.GetBalance(addr3.Recipient))

Output:

last block: #5
balance of addr1: 899000
balance of addr2: 100000
balance of addr3: 2500000000000001000

func GenerateRootBlockChain 

func GenerateRootBlockChain(parent *types.RootBlock, engine consensus.Engine, n int, gen func(int, *RootBlockGen)) []*types.RootBlock

GenerateRootBlockChain creates a chain of n blocks. The first block's parent will be the provided parent. db is used to store intermediate states and should contain the parent's state trie.

The generator function is called with a new block generator for every block. Any transactions and uncles added to the generator become part of the block. If gen is nil, the blocks will be empty and their coinbase will be the zero address.

Blocks created by GenerateRootBlockChain do not contain valid proof of work values. Inserting them into BlockChain requires use of FakePow or a similar non-validating proof of work implementation.

Example 
var (
	addr1        = account.Address{Recipient: account.Recipient{1}, FullShardKey: 0}
	addr2        = account.Address{Recipient: account.Recipient{2}, FullShardKey: 0}
	addr3        = account.Address{Recipient: account.Recipient{3}, FullShardKey: 0}
	db           = ethdb.NewMemDatabase()
	qkcconfig    = config.NewQuarkChainConfig()
	genesis      = Genesis{qkcConfig: qkcconfig}
	genesisBlock = genesis.MustCommitRootBlock(db)
	engine       = new(consensus.FakeEngine)
)

chain := GenerateRootBlockChain(genesisBlock, engine, 5, func(i int, gen *RootBlockGen) {
	switch i {
	case 0:
		// In block 1, addr1 sends addr2 some ether.
		header := types.MinorBlockHeader{Number: 1, Coinbase: addr1, ParentHash: genesisBlock.Hash(), Time: genesisBlock.Time()}
		gen.Headers = append(gen.Headers, &header)
	case 1:
		// In block 2, addr1 sends some more ether to addr2.
		// addr2 passes it on to addr3.
		header1 := types.MinorBlockHeader{Number: 1, Coinbase: addr1, ParentHash: genesisBlock.Hash(), Time: genesisBlock.Time()}
		header2 := types.MinorBlockHeader{Number: 2, Coinbase: addr2, ParentHash: header1.Hash(), Time: genesisBlock.Time()}
		gen.Headers = append(gen.Headers, &header1)
		gen.Headers = append(gen.Headers, &header2)
	case 2:
		// Block 3 is empty but was mined by addr3.
		gen.SetCoinbase(addr3)
		gen.SetExtra([]byte("yeehaw"))
	}
})

// Import the chain. This runs all block validation rules.
blockchain, err := NewRootBlockChain(db, qkcconfig, engine, nil)
if err != nil {
	fmt.Printf("new root block chain error %v\n", err)
	return
}
defer blockchain.Stop()

blockchain.SetValidator(&fakeRootBlockValidator{nil})
if i, err := blockchain.InsertChain(ToBlocks(chain)); err != nil {
	fmt.Printf("insert error (block %d): %v\n", chain[i].NumberU64(), err)
	return
}

fmt.Printf("last block: #%d\n", blockchain.CurrentBlock().Number())

Output:

last block: #5

func GetHashFn 

func GetHashFn(ref types.IHeader, chain ChainContext) func(n uint64) common.Hash

GetHashFn returns a GetHashFunc which retrieves header hashes by number

func IntrinsicGas 

func IntrinsicGas(data []byte, contractCreation, isCrossShard bool) (uint64, error)

IntrinsicGas computes the 'intrinsic gas' for a message with the given data.

func NewEVMContext 

func NewEVMContext(msg types.Message, mheader types.IHeader, chain ChainContext) vm.Context

func SetReceiptsData 

func SetReceiptsData(config *config.QuarkChainConfig, mBlock types.IBlock, receipts types.Receipts) error

SetReceiptsData computes all the non-consensus fields of the receipts

func SetupGenesisMinorBlock 

func SetupGenesisMinorBlock(db ethdb.Database, genesis *Genesis, rootBlock *types.RootBlock, fullShardId uint32) (*config.QuarkChainConfig, common.Hash, error)

func SetupGenesisRootBlock 

func SetupGenesisRootBlock(db ethdb.Database, genesis *Genesis) (*config.QuarkChainConfig, common.Hash, error)

SetupGenesisBlock writes or updates the genesis block in db. The block that will be used is: 

                     genesis == nil       genesis != nil
                  +------------------------------------------
db has no genesis |  main-net default  |  genesis
db has genesis    |  from DB           |  genesis (if compatible)

The stored chain configuration will be updated if it is compatible (i.e. does not specify a fork block below the local head block). In case of a conflict, the error is a *params.ConfigCompatError and the new, unwritten config is returned.

The returned chain configuration is never nil.

func Transfer 

func Transfer(db vm.StateDB, sender, recipient common.Address, amount *big.Int)

Transfer subtracts amount from sender and adds amount to recipient using the given Db

func ValidateTransaction 

func ValidateTransaction(state vm.StateDB, tx *types.Transaction, fromAddress *account.Address) error

ValidateTransaction validateTx before applyTx

Types

type Backend 

type Backend interface {
	GetBlockByNumber(number uint64) types.IBlock
	GetReceiptsByHash(hash common.Hash) types.Receipts
	GetLogs(hash common.Hash) [][]*types.Log
	CurrentBlock() *types.MinorBlock
}

type CacheConfig 

type CacheConfig struct {
	Disabled       bool          // Whether to disable trie write caching (archive node)
	TrieCleanLimit int           // Memory allowance (MB) to use for caching trie nodes in memory
	TrieDirtyLimit int           // Memory limit (MB) at which to start flushing dirty trie nodes to disk
	TrieTimeLimit  time.Duration // Time limit after which to flush the current in-memory trie to disk
}

CacheConfig contains the configuration values for the trie caching/pruning that's resident in a blockchain.

type ChainContext 

type ChainContext interface {
	// Engine retrieves the chain's consensus engine.
	Engine() consensus.Engine
	Config() *config.QuarkChainConfig
	// GetHeader returns the hash corresponding to their hash.
	GetHeader(common.Hash) types.IHeader
}

ChainContext supports retrieving Headers and consensus parameters from the current blockchain to be used during transaction processing.

type DeleteCallback 

type DeleteCallback func(rawdb.DatabaseDeleter, common.Hash)

DeleteCallback is a callback function that is called by SetHead before each header is deleted.

type Filter 

type Filter struct {
	// contains filtered or unexported fields
}

Filter can be used to retrieve and filter logs.

func NewRangeFilter 

func NewRangeFilter(backend Backend, begin, end uint64, addresses []common.Address, topics [][]common.Hash) *Filter

NewRangeFilter creates a new filter which uses a bloom filter on blocks to figure out whether a particular block is interesting or not.

func (*Filter) Logs 

func (f *Filter) Logs() ([]*types.Log, error)

Logs searches the blockchain for matching log entries, returning all from the first block that contains matches, updating the start of the filter accordingly.

type GasPool 

type GasPool uint64

GasPool tracks the amount of gas available during execution of the transactions in a block. The zero value is a pool with zero gas available.

func (*GasPool) AddGas 

func (gp *GasPool) AddGas(amount uint64) *GasPool

AddGas makes gas available for execution.

func (*GasPool) Gas 

func (gp *GasPool) Gas() uint64

Gas returns the amount of gas remaining in the pool.

func (*GasPool) String 

func (gp *GasPool) String() string

func (*GasPool) SubGas 

func (gp *GasPool) SubGas(amount uint64) error

SubGas deducts the given amount from the pool if enough gas is available and returns an error otherwise.

type Genesis 

type Genesis struct {
	// contains filtered or unexported fields
}

func NewGenesis 

func NewGenesis(config *config.QuarkChainConfig) *Genesis

func (*Genesis) CommitMinorBlock 

func (g *Genesis) CommitMinorBlock(db ethdb.Database, rootBlock *types.RootBlock, fullShardId uint32) (*types.MinorBlock, error)

CommitMinorBlock writes the block and state of a genesis specification to the database. The block is committed as the canonical head block.

func (*Genesis) CommitRootBlock 

func (g *Genesis) CommitRootBlock(db ethdb.Database) (*types.RootBlock, error)

CommitRootBlock writes the block and state of a genesis specification to the database. The block is committed as the canonical head block.

func (*Genesis) CreateMinorBlock 

func (g *Genesis) CreateMinorBlock(rootBlock *types.RootBlock, fullShardId uint32, db ethdb.Database) (*types.MinorBlock, error)

func (*Genesis) CreateRootBlock 

func (g *Genesis) CreateRootBlock() *types.RootBlock

func (*Genesis) MustCommitMinorBlock 

func (g *Genesis) MustCommitMinorBlock(db ethdb.Database, rootBlock *types.RootBlock, fullShardId uint32) *types.MinorBlock

MustCommit writes the genesis block and state to db, panicking on error. The block is committed as the canonical head block.

func (*Genesis) MustCommitRootBlock 

func (g *Genesis) MustCommitRootBlock(db ethdb.Database) *types.RootBlock

MustCommit writes the genesis block and state to db, panicking on error. The block is committed as the canonical head block.

type GenesisAccount 

type GenesisAccount struct {
	Code       []byte                      `json:"code,omitempty"`
	Storage    map[common.Hash]common.Hash `json:"storage,omitempty"`
	Balance    *big.Int                    `json:"balance" gencodec:"required"`
	Nonce      uint64                      `json:"nonce,omitempty"`
	PrivateKey []byte                      `json:"secretKey,omitempty"` // for tests
}

GenesisAccount is an account in the state of the genesis block.

type GenesisMismatchError 

type GenesisMismatchError struct {
	Stored, New common.Hash
}

func (*GenesisMismatchError) Error 

func (e *GenesisMismatchError) Error() string

type HeaderChain 

type HeaderChain struct {
	// contains filtered or unexported fields
}

HeaderChain implements the basic block header chain logic that is shared by core.MinorBlockChain and light.LightChain. It is not usable in itself, only as a part of either structure. It is not thread safe either, the encapsulating chain structures should do the necessary mutex locking/unlocking.

func NewMinorHeaderChain 

func NewMinorHeaderChain(chainDb ethdb.Database, config *config.QuarkChainConfig, engine consensus.Engine, procInterrupt func() bool) (*HeaderChain, error)

NewMinorHeaderChain creates a new HeaderChain structure. 

getValidator should return the parent's validator
procInterrupt points to the parent's interrupt semaphore
wg points to the parent's shutdown wait group

func (*HeaderChain) Config 

func (hc *HeaderChain) Config() *config.QuarkChainConfig

Config retrieves the header chain's chain configuration.

func (*HeaderChain) CurrentHeader 

func (hc *HeaderChain) CurrentHeader() types.IHeader

CurrentHeader retrieves the current head header of the canonical chain. The header is retrieved from the HeaderChain's internal cache.

func (*HeaderChain) Engine 

func (hc *HeaderChain) Engine() consensus.Engine

Engine retrieves the header chain's consensus engine.

func (*HeaderChain) GetAncestor 

func (hc *HeaderChain) GetAncestor(hash common.Hash, number, ancestor uint64, maxNonCanonical *uint64) (common.Hash, uint64)

GetAncestor retrieves the Nth ancestor of a given block. It assumes that either the given block or a close ancestor of it is canonical. maxNonCanonical points to a downwards counter limiting the number of blocks to be individually checked before we reach the canonical chain.

Note: ancestor == 0 returns the same block, 1 returns its parent and so on.

func (*HeaderChain) GetBlock 

func (hc *HeaderChain) GetBlock(hash common.Hash) types.IBlock

GetBlock implements consensus.ChainReader, and returns nil for every input as a header chain does not have blocks available for retrieval.

func (*HeaderChain) GetBlockHashesFromHash 

func (hc *HeaderChain) GetBlockHashesFromHash(hash common.Hash, max uint64) []common.Hash

GetBlockHashesFromHash retrieves a number of block hashes starting at a given hash, fetching towards the genesis block.

func (*HeaderChain) GetBlockNumber 

func (hc *HeaderChain) GetBlockNumber(hash common.Hash) *uint64

GetBlockNumber retrieves the block number belonging to the given hash from the cache or database

func (*HeaderChain) GetHeader 

func (hc *HeaderChain) GetHeader(hash common.Hash) types.IHeader

GetHeader retrieves a block header from the database by hash and number, caching it if found.

func (*HeaderChain) GetHeaderByHash 

func (hc *HeaderChain) GetHeaderByHash(hash common.Hash) types.IHeader

GetHeaderByHash retrieves a block header from the database by hash, caching it if found.

func (*HeaderChain) GetHeaderByNumber 

func (hc *HeaderChain) GetHeaderByNumber(number uint64) types.IHeader

GetHeaderByNumber retrieves a block header from the database by number, caching it (associated with its hash) if found.

func (*HeaderChain) GetTd 

func (hc *HeaderChain) GetTd(hash common.Hash, number uint64) *big.Int

GetTd retrieves a block's total difficulty in the canonical chain from the database by hash and number, caching it if found.

func (*HeaderChain) GetTdByHash 

func (hc *HeaderChain) GetTdByHash(hash common.Hash) *big.Int

GetTdByHash retrieves a block's total difficulty in the canonical chain from the database by hash, caching it if found.

func (*HeaderChain) HasHeader 

func (hc *HeaderChain) HasHeader(hash common.Hash, number uint64) bool

HasHeader checks if a block header is present in the database or not.

func (*HeaderChain) InsertHeaderChain 

func (hc *HeaderChain) InsertHeaderChain(chain []*types.MinorBlockHeader, writeHeader MinorWhCallback, start time.Time) (int, error)

InsertHeaderChain attempts to insert the given header chain in to the local chain, possibly creating a reorg. If an error is returned, it will return the index number of the failing header as well an error describing what went wrong.

The verify parameter can be used to fine tune whether nonce verification should be done or not. The reason behind the optional check is because some of the header retrieval mechanisms already need to verfy nonces, as well as because nonces can be verified sparsely, not needing to check each.

func (*HeaderChain) SetCurrentHeader 

func (hc *HeaderChain) SetCurrentHeader(head *types.MinorBlockHeader)

SetCurrentHeader sets the current head header of the canonical chain.

func (*HeaderChain) SetGenesis 

func (hc *HeaderChain) SetGenesis(head *types.MinorBlockHeader)

SetGenesis sets a new genesis block header for the chain

func (*HeaderChain) SetHead 

func (hc *HeaderChain) SetHead(head uint64, delFn DeleteCallback)

SetHead rewinds the local chain to a new head. Everything above the new head will be deleted and the new one set.

func (*HeaderChain) ValidateHeaderChain 

func (hc *HeaderChain) ValidateHeaderChain(chain []*types.MinorBlockHeader, checkFreq int) (int, error)

func (*HeaderChain) WriteHeader 

func (hc *HeaderChain) WriteHeader(header *types.MinorBlockHeader) (status WriteStatus, err error)

WriteHeader writes a header into the local chain, given that its parent is already known. If the total difficulty of the newly inserted header becomes greater than the current known TD, the canonical chain is re-routed.

Note: This method is not concurrent-safe with inserting blocks simultaneously into the chain, as side effects caused by reorganisations cannot be emulated without the real blocks. Hence, writing Headers directly should only be done in two scenarios: pure-header mode of operation (light clients), or properly separated header/block phases (non-archive clients).

func (*HeaderChain) WriteTd 

func (hc *HeaderChain) WriteTd(hash common.Hash, number uint64, td *big.Int) error

WriteTd stores a block's total difficulty into the database, also caching it along the way.

type Message 

type Message interface {
	From() common.Address
	//FromFrontier() (common.Address, error)
	To() *common.Address

	GasPrice() *big.Int
	Gas() uint64
	Value() *big.Int

	Nonce() uint64
	CheckNonce() bool
	Data() []byte
	IsCrossShard() bool
	FromFullShardKey() uint32
	ToFullShardKey() uint32
	TxHash() common.Hash
}

Message represents a message sent to a contract.

type MinorBlockChain 

type MinorBlockChain struct {
	// contains filtered or unexported fields
}

MinorBlockChain represents the canonical chain given a database with a genesis block. The Blockchain manages chain imports, reverts, chain reorganisations.

Importing blocks in to the block chain happens according to the set of rules defined by the two stage Validator. Processing of blocks is done using the Processor which processes the included transaction. The validation of the state is done in the second part of the Validator. Failing results in aborting of the import.

The MinorBlockChain also helps in returning blocks from **any** chain included in the database as well as blocks that represents the canonical chain. It's important to note that GetBlock can return any block and does not need to be included in the canonical one where as GetBlockByNumber always represents the canonical chain.

func NewMinorBlockChain 

func NewMinorBlockChain(
	db ethdb.Database,
	cacheConfig *CacheConfig,
	chainConfig *params.ChainConfig,
	clusterConfig *config.ClusterConfig,
	engine consensus.Engine,
	vmConfig vm.Config,
	shouldPreserve func(block *types.MinorBlock) bool,
	fullShardID uint32,
) (*MinorBlockChain, error)

NewMinorBlockChain returns a fully initialised block chain using information available in the database. It initialises the default Ethereum Validator and Processor.

func (*MinorBlockChain) AddBlock 

func (m *MinorBlockChain) AddBlock(block types.IBlock) error

func (*MinorBlockChain) AddCrossShardTxListByMinorBlockHash 

func (m *MinorBlockChain) AddCrossShardTxListByMinorBlockHash(h common.Hash, txList types.CrossShardTransactionDepositList)

AddCrossShardTxListByMinorBlockHash add crossShardTxList by slave

func (*MinorBlockChain) AddRootBlock 

func (m *MinorBlockChain) AddRootBlock(rBlock *types.RootBlock) (bool, error)

AddRootBlock add root block for minorBlockChain

func (*MinorBlockChain) AddTx 

func (m *MinorBlockChain) AddTx(tx *types.Transaction) error

AddTx add tx to txPool

func (*MinorBlockChain) Config 

func (m *MinorBlockChain) Config() *config.QuarkChainConfig

Config retrieves the blockchain's chain configuration.

func (*MinorBlockChain) CreateBlockToMine 

func (m *MinorBlockChain) CreateBlockToMine(createTime *uint64, address *account.Address, gasLimit *big.Int) (*types.MinorBlock, error)

CreateBlockToMine create block to mine

func (*MinorBlockChain) CurrentBlock 

func (m *MinorBlockChain) CurrentBlock() *types.MinorBlock

CurrentBlock retrieves the current head block of the canonical chain. The block is retrieved from the blockchain's internal cache.

func (*MinorBlockChain) CurrentHeader 

func (m *MinorBlockChain) CurrentHeader() types.IHeader

CurrentHeader retrieves the current head header of the canonical chain. The header is retrieved from the HeaderChain's internal cache.

func (*MinorBlockChain) Engine 

func (m *MinorBlockChain) Engine() consensus.Engine

Engine retrieves the blockchain's consensus engine.

func (*MinorBlockChain) EstimateGas 

func (m *MinorBlockChain) EstimateGas(tx *types.Transaction, fromAddress account.Address) (uint32, error)

EstimateGas estimate gas for this tx

func (*MinorBlockChain) ExecuteTx 

func (m *MinorBlockChain) ExecuteTx(tx *types.Transaction, fromAddress *account.Address, height *uint64) ([]byte, error)

ExecuteTx execute tx

func (*MinorBlockChain) Export 

func (m *MinorBlockChain) Export(w io.Writer) error

Export writes the active chain to the given writer.

func (*MinorBlockChain) ExportN 

func (m *MinorBlockChain) ExportN(w io.Writer, first uint64, last uint64) error

ExportN writes a subset of the active chain to the given writer.

func (*MinorBlockChain) FinalizeAndAddBlock 

func (m *MinorBlockChain) FinalizeAndAddBlock(block *types.MinorBlock) (*types.MinorBlock, types.Receipts, error)

FinalizeAndAddBlock finalize minor block and add it to chain only used in test now

func (*MinorBlockChain) GasLimit 

func (m *MinorBlockChain) GasLimit() uint64

GasLimit returns the gas limit of the current HEAD block.

func (*MinorBlockChain) GasPrice 

func (m *MinorBlockChain) GasPrice() (uint64, error)

GasPrice gas price

func (*MinorBlockChain) Genesis 

func (m *MinorBlockChain) Genesis() *types.MinorBlock

Genesis retrieves the chain's genesis block.

func (*MinorBlockChain) GetAncestor 

func (m *MinorBlockChain) GetAncestor(hash common.Hash, number, ancestor uint64, maxNonCanonical *uint64) (common.Hash, uint64)

GetAncestor retrieves the Nth ancestor of a given block. It assumes that either the given block or a close ancestor of it is canonical. maxNonCanonical points to a downwards counter limiting the number of blocks to be individually checked before we reach the canonical chain.

Note: ancestor == 0 returns the same block, 1 returns its parent and so on.

func (*MinorBlockChain) GetBalance 

func (m *MinorBlockChain) GetBalance(recipient account.Recipient, height *uint64) (*big.Int, error)

GetBalance get balance for address

func (*MinorBlockChain) GetBlock 

func (m *MinorBlockChain) GetBlock(hash common.Hash) types.IBlock

GetBlock retrieves a block from the database by hash and number, caching it if found.

func (*MinorBlockChain) GetBlockByNumber 

func (m *MinorBlockChain) GetBlockByNumber(number uint64) types.IBlock

GetBlockByNumber retrieves a block from the database by number, caching it (associated with its hash) if found.

func (*MinorBlockChain) GetBlockHashesFromHash 

func (m *MinorBlockChain) GetBlockHashesFromHash(hash common.Hash, max uint64) []common.Hash

GetBlockHashesFromHash retrieves a number of block hashes starting at a given hash, fetching towards the genesis block.

func (*MinorBlockChain) GetBlocksFromHash 

func (m *MinorBlockChain) GetBlocksFromHash(hash common.Hash, n int) (blocks []types.IBlock)

GetBlocksFromHash returns the block corresponding to hash and up to n-1 ancestors. [deprecated by eth/62]

func (*MinorBlockChain) GetBranch 

func (m *MinorBlockChain) GetBranch() account.Branch

func (*MinorBlockChain) GetCode 

func (m *MinorBlockChain) GetCode(recipient account.Recipient, height *uint64) ([]byte, error)

GetCode get code for addr

func (*MinorBlockChain) GetHeader 

func (m *MinorBlockChain) GetHeader(hash common.Hash) types.IHeader

GetHeader retrieves a block header from the database by hash and number, caching it if found.

func (*MinorBlockChain) GetHeaderByHash 

func (m *MinorBlockChain) GetHeaderByHash(hash common.Hash) types.IHeader

GetHeaderByHash retrieves a block header from the database by hash, caching it if found.

func (*MinorBlockChain) GetHeaderByNumber 

func (m *MinorBlockChain) GetHeaderByNumber(number uint64) types.IHeader

GetHeaderByNumber retrieves a block header from the database by number, caching it (associated with its hash) if found.

func (*MinorBlockChain) GetLogs 

func (m *MinorBlockChain) GetLogs(hash common.Hash) [][]*types.Log

func (*MinorBlockChain) GetLogsByAddressAndTopic 

func (m *MinorBlockChain) GetLogsByAddressAndTopic(start uint64, end uint64, addresses []account.Address, topics [][]common.Hash) ([]*types.Log, error)

func (*MinorBlockChain) GetMinorBlock 

func (m *MinorBlockChain) GetMinorBlock(hash common.Hash) *types.MinorBlock

GetMinorBlock retrieves a block from the database by hash, caching it if found.

func (*MinorBlockChain) GetPOSWCoinbaseBlockCnt 

func (m *MinorBlockChain) GetPOSWCoinbaseBlockCnt(headerHash common.Hash, length *uint32) (map[account.Recipient]uint32, error)

func (*MinorBlockChain) GetReceiptsByHash 

func (m *MinorBlockChain) GetReceiptsByHash(hash common.Hash) types.Receipts

GetReceiptsByHash retrieves the receipts for all transactions in a given block.

func (*MinorBlockChain) GetRootBlockByHash 

func (m *MinorBlockChain) GetRootBlockByHash(hash common.Hash) *types.RootBlock

GetRootBlockByHash get rootBlock by hash in minorBlockChain

func (*MinorBlockChain) GetRootTip 

func (m *MinorBlockChain) GetRootTip() *types.RootBlockHeader

func (*MinorBlockChain) GetShardStatus 

func (m *MinorBlockChain) GetShardStatus() (*rpc.ShardStatus, error)

GetShardStatus show shardStatus

func (*MinorBlockChain) GetStorageAt 

func (m *MinorBlockChain) GetStorageAt(recipient account.Recipient, key common.Hash, height *uint64) (common.Hash, error)

GetStorageAt get storage for addr

func (*MinorBlockChain) GetTd 

func (m *MinorBlockChain) GetTd(hash common.Hash, number uint64) *big.Int

GetTd retrieves a block's total difficulty in the canonical chain from the database by hash and number, caching it if found.

func (*MinorBlockChain) GetTdByHash 

func (m *MinorBlockChain) GetTdByHash(hash common.Hash) *big.Int

GetTdByHash retrieves a block's total difficulty in the canonical chain from the database by hash, caching it if found.

func (*MinorBlockChain) GetTransactionByAddress 

func (m *MinorBlockChain) GetTransactionByAddress(address account.Address, start []byte, limit uint32) ([]*rpc.TransactionDetail, []byte, error)

func (*MinorBlockChain) GetTransactionByHash 

func (m *MinorBlockChain) GetTransactionByHash(hash common.Hash) (*types.MinorBlock, uint32)

GetTransactionByHash get tx by hash

func (*MinorBlockChain) GetTransactionCount 

func (m *MinorBlockChain) GetTransactionCount(recipient account.Recipient, height *uint64) (uint64, error)

GetTransactionCount get txCount for addr

func (*MinorBlockChain) GetTransactionReceipt 

func (m *MinorBlockChain) GetTransactionReceipt(hash common.Hash) (*types.MinorBlock, uint32, *types.Receipt)

GetTransactionReceipt get tx receipt by hash for slave

func (*MinorBlockChain) GetUnconfirmedHeaderList 

func (m *MinorBlockChain) GetUnconfirmedHeaderList() []*types.MinorBlockHeader

GetUnconfirmedHeaderList get unconfirmed headerList

func (*MinorBlockChain) GetUnconfirmedHeadersCoinbaseAmount 

func (m *MinorBlockChain) GetUnconfirmedHeadersCoinbaseAmount() uint64

GetUnconfirmedHeadersCoinbaseAmount get unconfirmed Headers coinbase amount

func (*MinorBlockChain) GetVMConfig 

func (m *MinorBlockChain) GetVMConfig() *vm.Config

GetVMConfig returns the block chain VM config.

func (*MinorBlockChain) HasBlock 

func (m *MinorBlockChain) HasBlock(hash common.Hash) bool

HasBlock checks if a block is fully present in the database or not.

func (*MinorBlockChain) HasBlockAndState 

func (m *MinorBlockChain) HasBlockAndState(hash common.Hash) bool

HasBlockAndState checks if a block and associated state trie is fully present in the database or not, caching it if present.

func (*MinorBlockChain) HasHeader 

func (m *MinorBlockChain) HasHeader(hash common.Hash, number uint64) bool

HasHeader checks if a block header is present in the database or not, caching it if present.

func (*MinorBlockChain) HasState 

func (m *MinorBlockChain) HasState(hash common.Hash) bool

HasState checks if state trie is fully present in the database or not.

func (*MinorBlockChain) InitFromRootBlock 

func (m *MinorBlockChain) InitFromRootBlock(rBlock *types.RootBlock) error

InitFromRootBlock init minorBlockChain from rootBlock

func (*MinorBlockChain) InitGenesisState 

func (m *MinorBlockChain) InitGenesisState(rBlock *types.RootBlock) (*types.MinorBlock, error)

func (*MinorBlockChain) InsertChain 

func (m *MinorBlockChain) InsertChain(chain []types.IBlock) (int, error)

InsertChain attempts to insert the given batch of blocks in to the canonical chain or, otherwise, create a fork. If an error is returned it will return the index number of the failing block as well an error describing what went wrong.

After insertion is done, all accumulated events will be fired.

func (*MinorBlockChain) InsertChainForDeposits 

func (m *MinorBlockChain) InsertChainForDeposits(chain []types.IBlock) (int, [][]*types.CrossShardTransactionDeposit, error)

InsertChainForDeposits also return cross-shard transaction deposits in addition to content returned from `InsertChain`.

func (*MinorBlockChain) InsertHeaderChain 

func (m *MinorBlockChain) InsertHeaderChain(chain []types.IHeader, checkFreq int) (int, error)

InsertHeaderChain attempts to insert the given header chain in to the local chain, possibly creating a reorg. If an error is returned, it will return the index number of the failing header as well an error describing what went wrong.

The verify parameter can be used to fine tune whether nonce verification should be done or not. The reason behind the optional check is because some of the header retrieval mechanisms already need to verify nonces, as well as because nonces can be verified sparsely, not needing to check each.

func (*MinorBlockChain) InsertReceiptChain 

func (m *MinorBlockChain) InsertReceiptChain(blockChain []types.IBlock, receiptChain []types.Receipts) (int, error)

InsertReceiptChain attempts to complete an already existing header chain with transaction and receipt data.

func (*MinorBlockChain) POSWDiffAdjust 

func (m *MinorBlockChain) POSWDiffAdjust(block types.IBlock) (uint64, error)

POSWDiffAdjust POSW diff calc,already locked by insertChain TODO to finish it later

func (*MinorBlockChain) PostChainEvents 

func (m *MinorBlockChain) PostChainEvents(events []interface{}, logs []*types.Log)

PostChainEvents iterates over the events generated by a chain insertion and posts them into the event feed. TODO: Should not expose PostChainEvents. The chain events should be posted in WriteBlock.

func (*MinorBlockChain) Processor 

func (m *MinorBlockChain) Processor() Processor

Processor returns the current processor.

func (*MinorBlockChain) ReadCrossShardTxList 

func (m *MinorBlockChain) ReadCrossShardTxList(hash common.Hash) *types.CrossShardTransactionDepositList

func (*MinorBlockChain) ReadLastConfirmedMinorBlockHeaderAtRootBlock 

func (m *MinorBlockChain) ReadLastConfirmedMinorBlockHeaderAtRootBlock(hash common.Hash) common.Hash

func (*MinorBlockChain) Reset 

func (m *MinorBlockChain) Reset() error

reset purges the entire blockchain, restoring it to its genesis state.

func (*MinorBlockChain) ResetWithGenesisBlock 

func (m *MinorBlockChain) ResetWithGenesisBlock(genesis *types.MinorBlock) error

ResetWithGenesisBlock purges the entire blockchain, restoring it to the specified genesis state.

func (*MinorBlockChain) Rollback 

func (m *MinorBlockChain) Rollback(chain []common.Hash)

Rollback is designed to remove a chain of links from the database that aren't certain enough to be valid.

func (*MinorBlockChain) SetBroadcastMinorBlockFunc 

func (m *MinorBlockChain) SetBroadcastMinorBlockFunc(f func(block *types.MinorBlock) error)

func (*MinorBlockChain) SetHead 

func (m *MinorBlockChain) SetHead(head uint64) error

SetHead rewinds the local chain to a new head. In the case of Headers, everything above the new head will be deleted and the new one set. In the case of blocks though, the head may be further rewound if block bodies are missing (non-archive nodes after a fast sync). already have locked

func (*MinorBlockChain) SetProcessor 

func (m *MinorBlockChain) SetProcessor(processor Processor)

SetProcessor sets the processor required for making state modifications.

func (*MinorBlockChain) SetValidator 

func (m *MinorBlockChain) SetValidator(validator Validator)

SetValidator sets the validator which is used to validate incoming blocks.

func (*MinorBlockChain) State 

func (m *MinorBlockChain) State() (*state.StateDB, error)

State returns a new mutable state based on the current HEAD block.

func (*MinorBlockChain) StateAt 

func (m *MinorBlockChain) StateAt(root common.Hash) (*state.StateDB, error)

StateAt returns a new mutable state based on a particular point in time.

func (*MinorBlockChain) StateCache 

func (m *MinorBlockChain) StateCache() state.Database

StateCache returns the caching database underpinning the blockchain instance.

func (*MinorBlockChain) Stop 

func (m *MinorBlockChain) Stop()

Stop stops the blockchain service. If any imports are currently in progress it will abort them using the procInterrupt.

func (*MinorBlockChain) SubscribeChainEvent 

func (m *MinorBlockChain) SubscribeChainEvent(ch chan<- MinorChainEvent) event.Subscription

SubscribeChainEvent registers a subscription of ChainEvent.

func (*MinorBlockChain) SubscribeChainHeadEvent 

func (m *MinorBlockChain) SubscribeChainHeadEvent(ch chan<- MinorChainHeadEvent) event.Subscription

SubscribeChainHeadEvent registers a subscription of ChainHeadEvent.

func (*MinorBlockChain) SubscribeChainSideEvent 

func (m *MinorBlockChain) SubscribeChainSideEvent(ch chan<- MinorChainSideEvent) event.Subscription

SubscribeChainSideEvent registers a subscription of ChainSideEvent.

func (*MinorBlockChain) SubscribeLogsEvent 

func (m *MinorBlockChain) SubscribeLogsEvent(ch chan<- []*types.Log) event.Subscription

SubscribeLogsEvent registers a subscription of []*types.Log.

func (*MinorBlockChain) SubscribeRemovedLogsEvent 

func (m *MinorBlockChain) SubscribeRemovedLogsEvent(ch chan<- RemovedLogsEvent) event.Subscription

SubscribeRemovedLogsEvent registers a subscription of RemovedLogsEvent.

func (*MinorBlockChain) TrieNode 

func (m *MinorBlockChain) TrieNode(hash common.Hash) ([]byte, error)

TrieNode retrieves a blob of data associated with a trie node (or code hash) either from ephemeral in-memory cache, or from persistent storage.

func (*MinorBlockChain) Validator 

func (m *MinorBlockChain) Validator() Validator

Validator returns the current validator.

func (*MinorBlockChain) WriteBlockWithState 

func (m *MinorBlockChain) WriteBlockWithState(block *types.MinorBlock, receipts []*types.Receipt, state *state.StateDB, xShardList []*types.CrossShardTransactionDeposit, updateTip bool) (status WriteStatus, err error)

WriteBlockWithState writes the block and all associated state to the database.

func (*MinorBlockChain) WriteBlockWithoutState 

func (m *MinorBlockChain) WriteBlockWithoutState(block types.IBlock, td *big.Int) (err error)

WriteBlockWithoutState writes only the block and its metadata to the database, but does not write any state. This is used to construct competing side forks up to the point where they exceed the canonical total difficulty.

type MinorBlockGen 

type MinorBlockGen struct {
	// contains filtered or unexported fields
}

MinorBlockGen creates blocks for testing. See GenerateChain for a detailed explanation.

func (*MinorBlockGen) AddTx 

func (b *MinorBlockGen) AddTx(quarkChainConfig *config.QuarkChainConfig, tx *types.Transaction)

AddTx adds a transaction to the generated block. If no coinbase has been set, the block's coinbase is set to the zero address.

AddTx panics if the transaction cannot be executed. In addition to the protocol-imposed limitations (gas limit, etc.), there are some further limitations on the content of transactions that can be added. Notably, contract code relying on the BLOCKHASH instruction will panic during execution.

func (*MinorBlockGen) AddTxWithChain 

func (b *MinorBlockGen) AddTxWithChain(quarkChainConfig *config.QuarkChainConfig, bc *MinorBlockChain, tx *types.Transaction)

AddTxWithChain adds a transaction to the generated block. If no coinbase has been set, the block's coinbase is set to the zero address.

AddTxWithChain panics if the transaction cannot be executed. In addition to the protocol-imposed limitations (gas limit, etc.), there are some further limitations on the content of transactions that can be added. If contract code relies on the BLOCKHASH instruction, the block in chain will be returned.

func (*MinorBlockGen) Number 

func (b *MinorBlockGen) Number() *big.Int

Number returns the block number of the block being generated.

func (*MinorBlockGen) PrevBlock 

func (b *MinorBlockGen) PrevBlock(index int) *types.MinorBlock

PrevBlock returns a previously generated block by number. It panics if num is greater or equal to the number of the block being generated. For index -1, PrevBlock returns the parent block given to GenerateChain.

func (*MinorBlockGen) SetCoinbase 

func (b *MinorBlockGen) SetCoinbase(addr account.Address)

SetCoinbase sets the coinbase of the generated block. It can be called at most once.

func (*MinorBlockGen) SetDifficulty 

func (b *MinorBlockGen) SetDifficulty(value uint64)

OffsetTime modifies the time instance of a block, implicitly changing its associated difficulty. It's useful to test scenarios where forking is not tied to chain length directly.

func (*MinorBlockGen) SetExtra 

func (b *MinorBlockGen) SetExtra(data []byte)

SetExtra sets the extra data field of the generated block.

func (*MinorBlockGen) SetNonce 

func (b *MinorBlockGen) SetNonce(nonce uint64)

SetNonce sets the nonce field of the generated block.

func (*MinorBlockGen) TxNonce 

func (b *MinorBlockGen) TxNonce(addr common.Address) uint64

TxNonce returns the next valid transaction nonce for the account at addr. It panics if the account does not exist.

type MinorBlockValidator 

type MinorBlockValidator struct {
	// contains filtered or unexported fields
}

MinorBlockValidator is responsible for validating block Headers, uncles and processed state.

MinorBlockValidator implements Validator.

func NewBlockValidator 

func NewBlockValidator(quarkChainConfig *config.QuarkChainConfig, blockchain *MinorBlockChain, engine consensus.Engine, branch account.Branch) *MinorBlockValidator

NewBlockValidator returns a new block validator which is safe for re-use

func (*MinorBlockValidator) ValidateBlock 

func (v *MinorBlockValidator) ValidateBlock(mBlock types.IBlock) error

ValidateBlock validates the given block's uncles and verifies the block header's transaction and uncle roots. The Headers are assumed to be already validated at this point.

func (*MinorBlockValidator) ValidateHeader 

func (v *MinorBlockValidator) ValidateHeader(header types.IHeader) error

ValidateHeader calls underlying engine's header verification method plus some sanity check.

func (*MinorBlockValidator) ValidateState 

func (v *MinorBlockValidator) ValidateState(mBlock, parent types.IBlock, statedb *state.StateDB, receipts types.Receipts, usedGas uint64) error

ValidateState validates the various changes that happen after a state transition, such as amount of used gas, the receipt roots and the state root itself. ValidateState returns a database batch if the validation was a success otherwise nil and an error is returned.

func (*MinorBlockValidator) ValidatorSeal 

func (v *MinorBlockValidator) ValidatorSeal(mHeader types.IHeader) error

ValidatorBlockSeal validate minor block seal when validate block

type MinorChainEvent 

type MinorChainEvent struct {
	Block *types.MinorBlock
	Hash  common.Hash
	Logs  []*types.Log
}

type MinorChainHeadEvent 

type MinorChainHeadEvent struct{ Block *types.MinorBlock }

type MinorChainSideEvent 

type MinorChainSideEvent struct {
	Block types.IBlock
}

type MinorWhCallback 

type MinorWhCallback func(header *types.MinorBlockHeader) error

MinorWhCallback is a callback function for inserting individual Headers. A callback is used for two reasons: first, in a LightChain, status should be processed and light chain events sent, while in a MinorBlockChain this is not necessary since chain events are sent after inserting blocks. Second, the header writes should be protected by the parent chain mutex individually.

type NewMinedBlockEvent 

type NewMinedBlockEvent struct{ Block types.IBlock }

NewMinedBlockEvent is posted when a block has been imported.

type NewTxsEvent 

type NewTxsEvent struct{ Txs []*types.Transaction }

NewTxsEvent is posted when a batch of transactions enter the transaction pool.

type PendingLogsEvent 

type PendingLogsEvent struct {
	Logs []*types.Log
}

PendingLogsEvent is posted pre mining and notifies of pending logs.

type Processor 

type Processor interface {
	Process(block *types.MinorBlock, statedb *state.StateDB, cfg vm.Config, txIncluded []*types.Transaction, xShardReceivedTxList []*types.CrossShardTransactionDeposit) (types.Receipts, []*types.Log, uint64, error)
}

Processor is an interface for processing blocks using a given initial state.

Process takes the block to be processed and the statedb upon which the initial state is based. It should return the receipts generated, amount of gas used in the process and return an error if any of the internal rules failed.

type RemovedLogsEvent 

type RemovedLogsEvent struct{ Logs []*types.Log }

RemovedLogsEvent is posted when a reorg happens

type RootBlockChain 

type RootBlockChain struct {
	// contains filtered or unexported fields
}

RootBlockChain represents the canonical chain given a database with a genesis block. The Blockchain manages chain imports, reverts, chain reorganisations.

Importing blocks in to the block chain happens according to the set of rules defined by the two stage Validator. Processing of blocks is done using the Processor which processes the included transaction. The validation of the state is done in the second part of the Validator. Failing results in aborting of the import.

The RootBlockChain also helps in returning blocks from **any** chain included in the database as well as blocks that represents the canonical chain. It's important to note that GetBlock can return any block and does not need to be included in the canonical one where as GetBlockByNumber always represents the canonical chain.

func NewRootBlockChain 

func NewRootBlockChain(db ethdb.Database, chainConfig *config.QuarkChainConfig, engine consensus.Engine, shouldPreserve func(block *types.RootBlock) bool) (*RootBlockChain, error)

NewBlockChain returns a fully initialized block chain using information available in the database. It initializes the default Ethereum Validator and Processor.

func (*RootBlockChain) AddBlock 

func (bc *RootBlockChain) AddBlock(block types.IBlock) error

func (*RootBlockChain) AddValidatedMinorBlockHeader 

func (bc *RootBlockChain) AddValidatedMinorBlockHeader(hash common.Hash)

func (*RootBlockChain) CalculateRootBlockCoinBase 

func (bc *RootBlockChain) CalculateRootBlockCoinBase(rootBlock *types.RootBlock) *big.Int

func (*RootBlockChain) ClearCommittingHash 

func (bc *RootBlockChain) ClearCommittingHash()

func (*RootBlockChain) Config 

func (bc *RootBlockChain) Config() *config.QuarkChainConfig

Config retrieves the blockchain's chain configuration.

func (*RootBlockChain) CreateBlockToMine 

func (bc *RootBlockChain) CreateBlockToMine(mHeaderList []*types.MinorBlockHeader, address *account.Address, createTime *uint64) (*types.RootBlock, error)

func (*RootBlockChain) CurrentBlock 

func (bc *RootBlockChain) CurrentBlock() *types.RootBlock

CurrentBlock retrieves the current head block of the canonical chain. The block is retrieved from the blockchain's internal cache.

func (*RootBlockChain) CurrentHeader 

func (bc *RootBlockChain) CurrentHeader() types.IHeader

CurrentHeader retrieves the current head header of the canonical chain. The header is retrieved from the RootHeaderChain's internal cache.

func (*RootBlockChain) Engine 

func (bc *RootBlockChain) Engine() consensus.Engine

Engine retrieves the blockchain's consensus engine.

func (*RootBlockChain) Export 

func (bc *RootBlockChain) Export(w io.Writer) error

Export writes the active chain to the given writer.

func (*RootBlockChain) ExportN 

func (bc *RootBlockChain) ExportN(w io.Writer, first uint64, last uint64) error

ExportN writes a subset of the active chain to the given writer.

func (*RootBlockChain) Genesis 

func (bc *RootBlockChain) Genesis() *types.RootBlock

Genesis retrieves the chain's genesis block.

func (*RootBlockChain) GetAncestor 

func (bc *RootBlockChain) GetAncestor(hash common.Hash, number, ancestor uint64, maxNonCanonical *uint64) (common.Hash, uint64)

GetAncestor retrieves the Nth ancestor of a given block. It assumes that either the given block or a close ancestor of it is canonical. maxNonCanonical points to a downwards counter limiting the number of blocks to be individually checked before we reach the canonical chain.

Note: ancestor == 0 returns the same block, 1 returns its parent and so on.

func (*RootBlockChain) GetBlock 

func (bc *RootBlockChain) GetBlock(hash common.Hash) types.IBlock

GetBlock retrieves a block from the database by hash and number, caching it if found.

func (*RootBlockChain) GetBlockByNumber 

func (bc *RootBlockChain) GetBlockByNumber(number uint64) types.IBlock

GetBlockByNumber retrieves a block from the database by number, caching it (associated with its hash) if found.

func (*RootBlockChain) GetBlockCount 

func (bc *RootBlockChain) GetBlockCount(rootHeight uint32) (map[uint32]map[account.Recipient]uint32, error)

func (*RootBlockChain) GetBlockHashesFromHash 

func (bc *RootBlockChain) GetBlockHashesFromHash(hash common.Hash, max uint64) []common.Hash

GetBlockHashesFromHash retrieves a number of block hashes starting at a given hash, fetching towards the genesis block.

func (*RootBlockChain) GetCommittingBlockHash 

func (bc *RootBlockChain) GetCommittingBlockHash() common.Hash

func (*RootBlockChain) GetHeader 

func (bc *RootBlockChain) GetHeader(hash common.Hash) types.IHeader

GetHeader retrieves a block header from the database by hash and number, caching it if found.

func (*RootBlockChain) GetHeaderByNumber 

func (bc *RootBlockChain) GetHeaderByNumber(number uint64) types.IHeader

GetHeaderByNumber retrieves a block header from the database by number, caching it (associated with its hash) if found.

func (*RootBlockChain) GetLatestMinorBlockHeaders 

func (bc *RootBlockChain) GetLatestMinorBlockHeaders(hash common.Hash) map[uint32]*types.MinorBlockHeader

func (*RootBlockChain) GetNextDifficulty 

func (bc *RootBlockChain) GetNextDifficulty(create *uint64) (*big.Int, error)

func (*RootBlockChain) GetTd 

func (bc *RootBlockChain) GetTd(hash common.Hash) *big.Int

GetTd retrieves a block's total difficulty in the canonical chain from the database by hash and number, caching it if found.

func (*RootBlockChain) HasBlock 

func (bc *RootBlockChain) HasBlock(hash common.Hash) bool

HasBlock checks if a block is fully present in the database or not.

func (*RootBlockChain) HasHeader 

func (bc *RootBlockChain) HasHeader(hash common.Hash) bool

HasHeader checks if a block header is present in the database or not, caching it if present.

func (*RootBlockChain) InsertChain 

func (bc *RootBlockChain) InsertChain(chain []types.IBlock) (int, error)

InsertChain attempts to insert the given batch of blocks in to the canonical chain or, otherwise, create a fork. If an error is returned it will return the index number of the failing block as well an error describing what went wrong.

After insertion is done, all accumulated events will be fired.

func (*RootBlockChain) InsertHeaderChain 

func (bc *RootBlockChain) InsertHeaderChain(chain []*types.RootBlockHeader, checkFreq int) (int, error)

InsertHeaderChain attempts to insert the given header chain in to the local chain, possibly creating a reorg. If an error is returned, it will return the index number of the failing header as well an error describing what went wrong.

The verify parameter can be used to fine tune whether nonce verification should be done or not. The reason behind the optional check is because some of the header retrieval mechanisms already need to verify nonces, as well as because nonces can be verified sparsely, not needing to check each.

func (*RootBlockChain) IsMinorBlockValidated 

func (bc *RootBlockChain) IsMinorBlockValidated(hash common.Hash) bool

func (*RootBlockChain) PostChainEvents 

func (bc *RootBlockChain) PostChainEvents(events []interface{})

PostChainEvents iterates over the events generated by a chain insertion and posts them into the event feed. TODO: Should not expose PostChainEvents. The chain events should be posted in WriteBlock.

func (*RootBlockChain) PutRootBlockIndex 

func (bc *RootBlockChain) PutRootBlockIndex(block *types.RootBlock) error

func (*RootBlockChain) Reset 

func (bc *RootBlockChain) Reset() error

Reset purges the entire blockchain, restoring it to its genesis state.

func (*RootBlockChain) ResetWithGenesisBlock 

func (bc *RootBlockChain) ResetWithGenesisBlock(genesis *types.RootBlock) error

ResetWithGenesisBlock purges the entire blockchain, restoring it to the specified genesis state.

func (*RootBlockChain) Rollback 

func (bc *RootBlockChain) Rollback(chain []common.Hash)

Rollback is designed to remove a chain of links from the database that aren't certain enough to be valid.

func (*RootBlockChain) SetBroadcastRootBlockFunc 

func (bc *RootBlockChain) SetBroadcastRootBlockFunc(f func(block *types.RootBlock) error)

func (*RootBlockChain) SetEnableCountMinorBlocks 

func (bc *RootBlockChain) SetEnableCountMinorBlocks(flag bool)

func (*RootBlockChain) SetHead 

func (bc *RootBlockChain) SetHead(head uint64) error

SetHead rewinds the local chain to a new head. In the case of Headers, everything above the new head will be deleted and the new one set. In the case of blocks though, the head may be further rewound if block bodies are missing (non-archive nodes after a fast sync).

func (*RootBlockChain) SetLatestMinorBlockHeaders 

func (bc *RootBlockChain) SetLatestMinorBlockHeaders(hash common.Hash, headerMap map[uint32]*types.MinorBlockHeader)

func (*RootBlockChain) SetValidator 

func (bc *RootBlockChain) SetValidator(validator Validator)

SetValidator sets the validator which is used to validate incoming blocks.

func (*RootBlockChain) Stop 

func (bc *RootBlockChain) Stop()

Stop stops the blockchain service. If any imports are currently in progress it will abort them using the procInterrupt.

func (*RootBlockChain) SubscribeChainEvent 

func (bc *RootBlockChain) SubscribeChainEvent(ch chan<- RootChainEvent) event.Subscription

SubscribeChainEvent registers a subscription of ChainEvent.

func (*RootBlockChain) SubscribeChainHeadEvent 

func (bc *RootBlockChain) SubscribeChainHeadEvent(ch chan<- RootChainHeadEvent) event.Subscription

SubscribeChainHeadEvent registers a subscription of ChainHeadEvent.

func (*RootBlockChain) SubscribeChainSideEvent 

func (bc *RootBlockChain) SubscribeChainSideEvent(ch chan<- RootChainSideEvent) event.Subscription

SubscribeChainSideEvent registers a subscription of ChainSideEvent.

func (*RootBlockChain) SubscribeRemovedLogsEvent 

func (bc *RootBlockChain) SubscribeRemovedLogsEvent(ch chan<- RemovedLogsEvent) event.Subscription

SubscribeRemovedLogsEvent registers a subscription of RemovedLogsEvent.

func (*RootBlockChain) Validator 

func (bc *RootBlockChain) Validator() Validator

Validator returns the current validator.

func (*RootBlockChain) WriteBlockWithState 

func (bc *RootBlockChain) WriteBlockWithState(block *types.RootBlock) (status WriteStatus, err error)

todo WriteBlockWithState writes the block and all associated state to the database.

func (*RootBlockChain) WriteBlockWithoutState 

func (bc *RootBlockChain) WriteBlockWithoutState(block types.IBlock, td *big.Int) (err error)

WriteBlockWithoutState writes only the block and its metadata to the database, but does not write any state. This is used to construct competing side forks up to the point where they exceed the canonical total difficulty.

func (*RootBlockChain) WriteCommittingHash 

func (bc *RootBlockChain) WriteCommittingHash(hash common.Hash)

type RootBlockGen 

type RootBlockGen struct {
	Headers types.MinorBlockHeaders
	// contains filtered or unexported fields
}

RootBlockGen creates blocks for testing. See GenerateRootBlockChain for a detailed explanation.

func (*RootBlockGen) Number 

func (b *RootBlockGen) Number() uint64

Number returns the block number of the block being generated.

func (*RootBlockGen) PrevBlock 

func (b *RootBlockGen) PrevBlock(index int) *types.RootBlock

PrevBlock returns a previously generated block by number. It panics if num is greater or equal to the number of the block being generated. For index -1, PrevBlock returns the parent block given to GenerateRootBlockChain.

func (*RootBlockGen) SetCoinbase 

func (b *RootBlockGen) SetCoinbase(addr account.Address)

SetCoinbase sets the coinbase of the generated block. It can be called at most once.

func (*RootBlockGen) SetDifficulty 

func (b *RootBlockGen) SetDifficulty(value uint64)

OffsetTime modifies the time instance of a block, implicitly changing its associated difficulty. It's useful to test scenarios where forking is not tied to chain length directly.

func (*RootBlockGen) SetExtra 

func (b *RootBlockGen) SetExtra(data []byte)

SetExtra sets the extra data field of the generated block.

func (*RootBlockGen) SetNonce 

func (b *RootBlockGen) SetNonce(nonce uint64)

SetNonce sets the nonce field of the generated block.

func (*RootBlockGen) SetTotalDifficulty 

func (b *RootBlockGen) SetTotalDifficulty(value *big.Int)

type RootBlockValidator 

type RootBlockValidator struct {
	// contains filtered or unexported fields
}

RootBlockValidator implements Validator.

func NewRootBlockValidator 

func NewRootBlockValidator(config *config.QuarkChainConfig, blockchain *RootBlockChain, engine consensus.Engine) *RootBlockValidator

NewRootBlockValidator returns a new root block validator which is safe for re-use

func (*RootBlockValidator) ValidateBlock 

func (v *RootBlockValidator) ValidateBlock(block types.IBlock) error

ValidateBlock validates the given block and verifies the block header's roots.

func (*RootBlockValidator) ValidateHeader 

func (v *RootBlockValidator) ValidateHeader(header types.IHeader) error

RootBlockValidator calls underlying engine's header verification method.

func (*RootBlockValidator) ValidateState 

func (v *RootBlockValidator) ValidateState(block, parent types.IBlock, statedb *state.StateDB, receipts types.Receipts, usedGas uint64) error

func (*RootBlockValidator) ValidatorSeal 

func (v *RootBlockValidator) ValidatorSeal(rHeader types.IHeader) error

type RootChainEvent 

type RootChainEvent struct {
	Block *types.RootBlock
	Hash  common.Hash
}

type RootChainHeadEvent 

type RootChainHeadEvent struct{ Block *types.RootBlock }

type RootChainSideEvent 

type RootChainSideEvent struct {
	Block *types.RootBlock
}

type RootHeaderChain 

type RootHeaderChain struct {
	// contains filtered or unexported fields
}

RootHeaderChain implements the basic block header chain logic that is shared by core.RootBlockChain and light.LightChain. It is not usable in itself, only as a part of either structure. It is not thread safe either, the encapsulating chain structures should do the necessary mutex locking/unlocking.

func NewHeaderChain 

func NewHeaderChain(chainDb ethdb.Database, config *config.QuarkChainConfig, engine consensus.Engine, procInterrupt func() bool) (*RootHeaderChain, error)

NewHeaderChain creates a new RootHeaderChain structure. 

getValidator should return the parent's validator
procInterrupt points to the parent's interrupt semaphore
wg points to the parent's shutdown wait group

func (*RootHeaderChain) Config 

func (hc *RootHeaderChain) Config() *config.QuarkChainConfig

Config retrieves the header chain's chain configuration.

func (*RootHeaderChain) CurrentHeader 

func (hc *RootHeaderChain) CurrentHeader() types.IHeader

CurrentHeader retrieves the current head header of the canonical chain. The header is retrieved from the RootHeaderChain's internal cache.

func (*RootHeaderChain) Engine 

func (hc *RootHeaderChain) Engine() consensus.Engine

Engine retrieves the header chain's consensus engine.

func (*RootHeaderChain) GetAncestor 

func (hc *RootHeaderChain) GetAncestor(hash common.Hash, number, ancestor uint64, maxNonCanonical *uint64) (common.Hash, uint64)

GetAncestor retrieves the Nth ancestor of a given block. It assumes that either the given block or a close ancestor of it is canonical. maxNonCanonical points to a downwards counter limiting the number of blocks to be individually checked before we reach the canonical chain.

Note: ancestor == 0 returns the same block, 1 returns its parent and so on.

func (*RootHeaderChain) GetBlock 

func (hc *RootHeaderChain) GetBlock(hash common.Hash) types.IBlock

GetBlock implements consensus.ChainReader, and returns nil for every input as a header chain does not have blocks available for retrieval.

func (*RootHeaderChain) GetBlockHashesFromHash 

func (hc *RootHeaderChain) GetBlockHashesFromHash(hash common.Hash, max uint64) []common.Hash

GetBlockHashesFromHash retrieves a number of block hashes starting at a given hash, fetching towards the genesis block.

func (*RootHeaderChain) GetBlockNumber 

func (hc *RootHeaderChain) GetBlockNumber(hash common.Hash) *uint64

GetBlockNumber retrieves the block number belonging to the given hash from the cache or database

func (*RootHeaderChain) GetHeader 

func (hc *RootHeaderChain) GetHeader(hash common.Hash) types.IHeader

GetHeader retrieves a block header from the database by hash and number, caching it if found.

func (*RootHeaderChain) GetHeaderByNumber 

func (hc *RootHeaderChain) GetHeaderByNumber(number uint64) types.IHeader

GetHeaderByNumber retrieves a block header from the database by number, caching it (associated with its hash) if found.

func (*RootHeaderChain) GetTd 

func (hc *RootHeaderChain) GetTd(hash common.Hash) *big.Int

GetTd retrieves a block's total difficulty in the canonical chain from the database by hash and number, caching it if found.

func (*RootHeaderChain) HasHeader 

func (hc *RootHeaderChain) HasHeader(hash common.Hash) bool

HasHeader checks if a block header is present in the database or not.

func (*RootHeaderChain) InsertHeaderChain 

func (hc *RootHeaderChain) InsertHeaderChain(chain []*types.RootBlockHeader, writeHeader WhCallback, start time.Time) (int, error)

InsertHeaderChain attempts to insert the given header chain in to the local chain, possibly creating a reorg. If an error is returned, it will return the index number of the failing header as well an error describing what went wrong.

The verify parameter can be used to fine tune whether nonce verification should be done or not. The reason behind the optional check is because some of the header retrieval mechanisms already need to verfy nonces, as well as because nonces can be verified sparsely, not needing to check each.

func (*RootHeaderChain) SetCurrentHeader 

func (hc *RootHeaderChain) SetCurrentHeader(head *types.RootBlockHeader)

SetCurrentHeader sets the current head header of the canonical chain.

func (*RootHeaderChain) SetGenesis 

func (hc *RootHeaderChain) SetGenesis(head *types.RootBlockHeader)

SetGenesis sets a new genesis block header for the chain

func (*RootHeaderChain) SetHead 

func (hc *RootHeaderChain) SetHead(head uint64, delFn DeleteCallback)

SetHead rewinds the local chain to a new head. Everything above the new head will be deleted and the new one set.

func (*RootHeaderChain) ValidateHeaderChain 

func (hc *RootHeaderChain) ValidateHeaderChain(chain []*types.RootBlockHeader, checkFreq int) (int, error)

func (*RootHeaderChain) WriteHeader 

func (hc *RootHeaderChain) WriteHeader(header *types.RootBlockHeader) (status WriteStatus, err error)

WriteHeader writes a header into the local chain, given that its parent is already known. If the total difficulty of the newly inserted header becomes greater than the current known TD, the canonical chain is re-routed.

Note: This method is not concurrent-safe with inserting blocks simultaneously into the chain, as side effects caused by reorganisations cannot be emulated without the real blocks. Hence, writing Headers directly should only be done in two scenarios: pure-header mode of operation (light clients), or properly separated header/block phases (non-archive clients).

func (*RootHeaderChain) WriteTd 

func (hc *RootHeaderChain) WriteTd(hash common.Hash, td *big.Int) error

WriteTd stores a block's total difficulty into the database, also caching it along the way.

type StateProcessor 

type StateProcessor struct {
	// contains filtered or unexported fields
}

StateProcessor is a basic Processor, which takes care of transitioning state from one point to another.

StateProcessor implements Processor.

func NewStateProcessor 

func NewStateProcessor(config *params.ChainConfig, bc *MinorBlockChain, engine consensus.Engine) *StateProcessor

NewStateProcessor initialises a new StateProcessor.

func (*StateProcessor) Process 

func (p *StateProcessor) Process(block *types.MinorBlock, statedb *state.StateDB, cfg vm.Config, evmTxIncluded []*types.Transaction, xShardReceiveTxList []*types.CrossShardTransactionDeposit) (types.Receipts, []*types.Log, uint64, error)

Process processes the state changes according to the Ethereum rules by running the transaction messages using the statedb and applying any rewards to both the processor (coinbase) and any included uncles.

Process returns the receipts and logs accumulated during the process and returns the amount of gas that was used in the process. If any of the transactions failed to execute due to insufficient gas it will return an error.

type StateTransition 

type StateTransition struct {
	// contains filtered or unexported fields
}

The State Transitioning Model

A state transition is a change made when a transaction is applied to the current world state The state transitioning model does all the necessary work to work out a valid new state root.

1) Nonce handling 2) Pre pay gas 3) Create a new state object if the recipient is \0*32 4) Value transfer == If contract creation == 

4a) Attempt to run transaction data
4b) If valid, use result as code for the new state object

== end == 5) Run Script section 6) Derive new state root

func NewStateTransition 

func NewStateTransition(evm *vm.EVM, msg Message, gp *GasPool) *StateTransition

NewStateTransition initialises and returns a new state transition object.

func (*StateTransition) TransitionDb 

func (st *StateTransition) TransitionDb(feeRate *big.Rat) (ret []byte, usedGas uint64, failed bool, err error)

TransitionDb will transition the state by applying the current message and returning the result including the used gas. It returns an error if failed. An error indicates a consensus issue.

type TxPool 

type TxPool struct {
	// contains filtered or unexported fields
}

TxPool contains all currently known transactions. Transactions enter the pool when they are received from the network or submitted locally. They exit the pool when they are included in the blockchain.

The pool separates processable transactions (which can be applied to the current state) and future transactions. Transactions move between those two states over time as they are received and processed.

func NewTxPool 

func NewTxPool(config TxPoolConfig, chain minorBlockChain) *TxPool

NewTxPool creates a new transaction pool to gather, sort and filter inbound transactions from the network.

func (*TxPool) AddLocal 

func (pool *TxPool) AddLocal(tx *types.Transaction) error

AddLocal enqueues a single transaction into the pool if it is valid, marking the sender as a local one in the mean time, ensuring it goes around the local pricing constraints.

func (*TxPool) AddLocals 

func (pool *TxPool) AddLocals(txs []*types.Transaction) []error

AddLocals enqueues a batch of transactions into the pool if they are valid, marking the senders as a local ones in the mean time, ensuring they go around the local pricing constraints.

func (*TxPool) AddRemote 

func (pool *TxPool) AddRemote(tx *types.Transaction) error

AddRemote enqueues a single transaction into the pool if it is valid. If the sender is not among the locally tracked ones, full pricing constraints will apply.

func (*TxPool) AddRemotes 

func (pool *TxPool) AddRemotes(txs []*types.Transaction) []error

AddRemotes enqueues a batch of transactions into the pool if they are valid. If the senders are not among the locally tracked ones, full pricing constraints will apply.

func (*TxPool) CheckTxBeforeAdd 

func (m *TxPool) CheckTxBeforeAdd(tx *types.Transaction) error

func (*TxPool) Content 

func (pool *TxPool) Content() (map[common.Address]types.Transactions, map[common.Address]types.Transactions)

Content retrieves the data content of the transaction pool, returning all the pending as well as queued transactions, grouped by account and sorted by nonce.

func (*TxPool) GasPrice 

func (pool *TxPool) GasPrice() *big.Int

GasPrice returns the current gas price enforced by the transaction pool.

func (*TxPool) Get 

func (pool *TxPool) Get(hash common.Hash) *types.Transaction

Get returns a transaction if it is contained in the pool and nil otherwise.

func (*TxPool) GetPendingTxsFromAddress 

func (pool *TxPool) GetPendingTxsFromAddress(addr account.Recipient) types.Transactions

func (*TxPool) GetQueueTxsFromAddress 

func (pool *TxPool) GetQueueTxsFromAddress(addr account.Recipient) types.Transactions

func (*TxPool) Locals 

func (pool *TxPool) Locals() []common.Address

Locals retrieves the accounts currently considered local by the pool.

func (*TxPool) Pending 

func (pool *TxPool) Pending() (map[common.Address]types.Transactions, error)

Pending retrieves all currently processable transactions, grouped by origin account and sorted by nonce. The returned transaction set is a copy and can be freely modified by calling code.

func (*TxPool) PendingCount 

func (pool *TxPool) PendingCount() int

func (*TxPool) SetGasPrice 

func (pool *TxPool) SetGasPrice(price *big.Int)

SetGasPrice updates the minimum price required by the transaction pool for a new transaction, and drops all transactions below this threshold.

func (*TxPool) State 

func (pool *TxPool) State() *state.ManagedState

State returns the virtual managed state of the transaction pool.

func (*TxPool) Stats 

func (pool *TxPool) Stats() (int, int)

Stats retrieves the current pool stats, namely the number of pending and the number of queued (non-executable) transactions.

func (*TxPool) Status 

func (pool *TxPool) Status(hashes []common.Hash) []TxStatus

Status returns the status (unknown/pending/queued) of a batch of transactions identified by their hashes.

func (*TxPool) Stop 

func (pool *TxPool) Stop()

Stop terminates the transaction pool.

func (*TxPool) SubscribeNewTxsEvent 

func (pool *TxPool) SubscribeNewTxsEvent(ch chan<- NewTxsEvent) event.Subscription

SubscribeNewTxsEvent registers a subscription of NewTxsEvent and starts sending event to the given channel.

type TxPoolConfig 

type TxPoolConfig struct {
	Locals   []common.Address // Addresses that should be treated by default as local
	NoLocals bool             // Whether local transaction handling should be disabled

	PriceLimit uint64 // Minimum gas price to enforce for acceptance into the pool
	PriceBump  uint64 // Minimum price bump percentage to replace an already existing transaction (nonce)

	AccountSlots uint64 // Number of executable transaction slots guaranteed per account
	GlobalSlots  uint64 // Maximum number of executable transaction slots for all accounts
	AccountQueue uint64 // Maximum number of non-executable transaction slots permitted per account
	GlobalQueue  uint64 // Maximum number of non-executable transaction slots for all accounts

	Lifetime  time.Duration // Maximum amount of time non-executable transaction are queued
	NetWorkID uint32
}

TxPoolConfig are the configuration parameters of the transaction pool.

type TxStatus 

type TxStatus uint

TxStatus is the current status of a transaction as seen by the pool. 

const (
	TxStatusUnknown TxStatus = iota
	TxStatusQueued
	TxStatusPending
	TxStatusIncluded
)

type Validator 

type Validator interface {
	// ValidateBlock validates the given block's content.
	ValidateBlock(block types.IBlock) error

	ValidateHeader(header types.IHeader) error
	// ValidateState validate state
	ValidateState(block, parent types.IBlock, state *state.StateDB, receipts types.Receipts, usedGas uint64) error
	ValidatorSeal(rHeader types.IHeader) error
}

Validator is an interface which defines the standard for block validation. It is only responsible for validating block contents, as the header validation is done by the specific consensus engines.

type WhCallback 

type WhCallback func(*types.RootBlockHeader) error

WhCallback is a callback function for inserting individual Headers. A callback is used for two reasons: first, in a LightChain, status should be processed and light chain events sent, while in a RootBlockChain this is not necessary since chain events are sent after inserting blocks. Second, the header writes should be protected by the parent chain mutex individually.

type WriteStatus 

type WriteStatus byte

WriteStatus status of write 

const (
	NonStatTy WriteStatus = iota
	CanonStatTy
	SideStatTy
)

Source Files

View all Source files

Directories

Path Synopsis
Modified from go-ethereum under GNU Lesser General Public License Modified from go-ethereum under GNU Lesser General Public License
 Modified from go-ethereum under GNU Lesser General Public License Modified from go-ethereum under GNU Lesser General Public License
Package state provides a caching layer atop the Ethereum state trie.
 Package state provides a caching layer atop the Ethereum state trie.
Modified from go-ethereum under GNU Lesser General Public License
 Modified from go-ethereum under GNU Lesser General Public License
vm
Package vm implements the Ethereum Virtual Machine.
 Package vm implements the Ethereum Virtual Machine.
runtime
Package runtime provides a basic execution model for executing EVM code.
 Package runtime provides a basic execution model for executing EVM code.

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